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KON-215-60-33.2-v.1.0-E
RFD TEHNICAL DESCRIPTION.doc
Negative sequence overcurrent protection with
definite-time
characteristic (ANSI No. 46-DT)
- Measurement inputs
IAA, IBA, ICA
- Function activation
Func.
OFF
I2>
I2>, I2>>
- First/second stage
- Pickup value
I2>, I2>>
0.10
– 3.00 In
step: 0.01 In
- Pickup time characteristic
Definite time
t2>, t2>>
0.05
– 300.00 s
step: 0.01 s
- Allowed dropdown time
t-drop
0.00
– 60.00 s
step: 0.01 s
- Pickup time
< 45 ms
- Release time
< 45 ms
- Pickup/release ratio
0.95 (Ip/In ≥ 0,5)
- Time accuracy
2% pickup value or 10 ms
- Current accuracy
3% pickup value or 0.02 In
- Working area
- all phase currents less than 4 In
Negative sequence overcurrent protection with
inverse-time
characteristic (ANSI No. 46-IT)
- Function activation
Func.
OFF
ON
- Measurement inputs
IAA, IBA, ICA
- Pickup value
I2>
0.10
– 3.00 In
step: 0.01 In
- Pickup time characteristic
IEC
Tp2
0.05
– 1.00 s
step: 0.01 s
- Working area
1.10 Ip phase currents less
than 4 In
- Pickup/release ratio
1.05 Ip (Ip/In ≥ 0,5)
- Time accuracy
3% + 2% curr
measurement error
- Current accuracy
3% set value or 0.02 In
Current unbalance protection (ANSI No. 46DP)
- Measurement inputs
IAA, IBA, ICA
- Function activation
Func.
OFF
ON
- Pickup value
Iub>
10.0
– 100.0 %
step: 0.1 %
- Pickup time characteristic
Definite time
t>
0.05
– 300.00 s
step: 0.01 s
- Minimal pickup current
Imin
0.05
– 1.00 In
step: 0.01In
- Pickup time
< 100 ms